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EP2700557B1 - Device and method for measuring the pressing power of the brake linings on brake discs of rail vehicles - Google Patents

Device and method for measuring the pressing power of the brake linings on brake discs of rail vehicles Download PDF

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Publication number
EP2700557B1
EP2700557B1 EP12005981.1A EP12005981A EP2700557B1 EP 2700557 B1 EP2700557 B1 EP 2700557B1 EP 12005981 A EP12005981 A EP 12005981A EP 2700557 B1 EP2700557 B1 EP 2700557B1
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EP
European Patent Office
Prior art keywords
brake
carrier plate
unit
measuring
force
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12005981.1A
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German (de)
French (fr)
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EP2700557A1 (en
Inventor
Wolfgang Rösch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roschconsult International Ltd
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Roschconsult International Ltd
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Application filed by Roschconsult International Ltd filed Critical Roschconsult International Ltd
Priority to EP12005981.1A priority Critical patent/EP2700557B1/en
Priority to PCT/EP2013/002308 priority patent/WO2014029466A2/en
Priority to CN201380036863.8A priority patent/CN104487313B/en
Publication of EP2700557A1 publication Critical patent/EP2700557A1/en
Priority to HK15107007.9A priority patent/HK1206311A1/en
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Publication of EP2700557B1 publication Critical patent/EP2700557B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/005—Force, torque, stress or strain

Definitions

  • the invention relates to a measuring device for measuring the pressing force of the brake pads of brake caliper units to the brake discs Scheibengebremster rail vehicles, i. a device with which the force applied by a brake pad of a brake caliper unit of a disk-braked wheelset of a rail vehicle on the brake disc contact pressure can be measured.
  • a measuring device for measuring the pressing force of the brake pads of brake caliper units to the brake discs Scheibengebremster rail vehicles, i. a device with which the force applied by a brake pad of a brake caliper unit of a disk-braked wheelset of a rail vehicle on the brake disc contact pressure can be measured.
  • the invention is directed to a corresponding method for measuring the contact pressure of the brake pads of brake caliper units to the brake discs Scheibengebremster rail vehicles.
  • the proper functioning of the brake caliper unit of disk-braked rail vehicles is tested in two ways. Firstly, during maintenance, inspection or maintenance of rail vehicles, the brake caliper unit is tested in a built-in condition of the rail vehicle only indirectly on the basis of the ease of movement of the moving parts and an apparent test for visible defects. A metrological check whether the prescribed in the brake calculation of vehicle registration documentation contact pressure of the brake pads on the brake discs Triggering the braking effect is actually achieved, does not occur during operational maintenance, inspection or maintenance of rail vehicles in the installed state of the brake caliper unit. According to this principle, for example, works from the published patent application DE 10022759 A1 known device.
  • the present invention seeks to provide an apparatus and a corresponding method, with the measuring of the contact pressure of the brake pads on the brake discs of rail vehicles in the installed state of the brake caliper unit with effective brake during operational maintenance, control - or maintenance work on the rail vehicles is possible, ie without the brake caliper unit must be removed to check the contact pressure of the rail vehicle.
  • a corresponding method for measuring the contact force applied to the brake disk by a brake pad of a brake caliper unit of a disk-braked rail vehicle comprises attaching a carrier plate instead of the brake pad to the brake pad holder of the brake caliper unit, wherein the brake caliper unit is installed in the rail vehicle, wherein the carrier plate comprises at least one force measuring sensor, which is introduced into the carrier plate in such a way that, when the brake is effective, it generates a measuring signal which is a measure of the contact force of the carrier plate on the brake disc the measuring signal from the force measuring sensor by means of a connecting cable and triggering the braking action of the brake caliper unit and determining the size of the contact pressure on the brake disc by means of an evaluation unit, which is supplied by the connecting cable, the measurement signal.
  • the invention has the advantage that it allows the measurement of the contact pressure of the brake pads on the brake discs of rail vehicles in the installed state of the brake caliper unit during operational maintenance, inspection or maintenance of the rail vehicles and thus the expansion and processing of the brake caliper unit closer to the actual Wear limit can be set.
  • the invention is based on the finding that the removal and processing of the brake caliper units need not take place in a fixed, precautionary interval, but can be carried out after the actual achievement of defined wear limits.
  • As an essential control criterion is to check whether the prescribed in the brake calculation of the vehicle registration documentation contact pressure of the brake pads on the brake discs is reliably achieved. Since all wear, aging and failure phenomena of the individual components of the brake caliper unit ultimately a drop or complete absence of the contact pressure of the brake pads on the brake discs and thus a reduction or failure of the braking effect As a result of the direct measurement of the contact force, it is possible to infer that no inadmissible wear, aging or failure conditions prevail at the time of the measurement.
  • the effectiveness of the brake caliper unit without removing the same during a maintenance, inspection or maintenance measure can be checked directly by measuring their braking force on the brake disc and all wear, aging and failure phenomena that lead to a reduction of the braking force to the brake disc , can be recognized by it.
  • a regular measurement in the course of maintenance, inspection or maintenance provides information on the wear, aging and failure characteristics of the brake caliper units.
  • a carrier plate may have one or more force measuring sensors, with which the contact pressure of the brake caliper unit can be measured on the brake disc with effective brake.
  • the force measuring sensors are preferably embedded in the support plate, but may also be attached to the support plate in other ways.
  • the force sensors are advantageously designed with respect to their measuring range for the measurement of the expected according to the brake calculation of the respective rail vehicle forces.
  • Force measuring sensors in the sense of the invention are also pressure measuring sensors, since with a known size of the contact or pressure surface of a pressure measuring sensor, the measured contact pressure is also a measure of the contact pressure.
  • FIG. 1 shows a schematic view of a device 1 according to the invention for measuring the force applied by a brake pad of a brake caliper unit of a disk-braked rail vehicle on the brake disc contact pressure in plan view of the side of the support plate 2, which bears against a brake disc, not shown.
  • the device 1 comprises a support plate 2, for example made of steel, which can be fixed instead of the brake pad on the brake pad holder of the brake caliper unit, wherein the brake caliper unit is installed in the rail vehicle.
  • the device 1 further comprises at least one force measuring sensor 3, which is introduced into the carrier plate 2 so that it generates a measurement signal with effective brake, which is a measure of the contact pressure of the carrier plate 2 on the brake disc, a connection cable 4 for taking out the measurement signal of the force measuring sensor 3 and an evaluation unit 5, which is supplied by means of the connecting cable 4, the measuring signal and which is designed to determine the size of the contact pressure on the brake disc.
  • the support plate 2 consists for example of steel. According to a preferred feature, the support plate 2 corresponds in shape and contour and in the design of the fasteners with which they on the brake pad holder of the associated, to be tested brake caliper unit can be attached to the brake pad, instead of it can be attached to the brake pad holder. Preferably, the shape and contour of the support plate 2 and the formation of the fastening elements are identical to the brake pad, instead of which they can be attached to the brake pad holder.
  • the support plate 2 has an outer contour and the attachment points of the appropriate type of brake caliper unit brake pads, it is advantageous if the device 1 according to the invention comprises a system or a series of support plates 2, in which there is one for each Bremsbauart to the shape of the Matching brake pads adapted support plate 2 are, which is similar or identical in its contour and mounting option on the brake pad holder to the respective brake type to be used brake pad and therefore instead of the brake pad on the brake pad holder can be attached.
  • the contour of a brake pad is similar to a flat disc of uniform thickness, which has the shape of a flat ellipse curved along the large diameter.
  • Support plate 2 shown also has this shape, but at the small diameter of the curved ellipse in two approximately equal parts 2a, 2b in two parts. This corresponds to the design of some two-part brake pads.
  • two of these pads with the straight ends are attached to each other, so that these two single pads a total covering in the form of a flat, curved along the large diameter ellipse. The same applies to the parts 2a, 2b of the support plate 2.
  • the contour of the brake pads consist only of a covering part in the form of the described total covering, including the support plate 2.
  • the support plate 2 may be formed in several parts, wherein one or more Parts of the support plate 2 can not have one or more force measuring sensors 3.
  • a connection cable 4 is led out, which passes the measurement signal to the evaluation unit 5.
  • the space for the sensors in the support plate 2, the force measuring sensors 3 and the cable 4 are preferably arranged in the support plate 2, that the function of the brake caliper unit is not affected.
  • the device 1 thus comprises a support plate 2, which is identical in contour and mounting possibility with the brake pad or similar to this and which can therefore be fixed instead of a brake pad on the brake pad holder. Since brake pads are regularly replaced after wear in the course of the maintenance, inspection or maintenance of rail vehicles after wear in the installed state of the brake caliper unit, is the replacement of a brake pad against the support plate 2 of the device 1 in the installed state of the brake caliper unit easily possible.
  • the support plate 2 includes one or more recesses in which one or more commercially available force measuring sensors 3 are accommodated, which are suitable for receiving the contact forces to be measured.
  • the measured value of the contact force of a likewise commercially available evaluation unit 5 which is designed according to a further advantageous feature as a reading, evaluation and storage unit supplied.
  • the essence of the invention consists in the design of the support plate 2 as a brake pad dummy with built-in and connected force measurement.
  • the force measuring sensors 3 and the read-out, evaluation and storage unit 6 itself are not the subject of the invention, but commercial common parts, which are used here only in a new context.
  • a carrier plate 2 is fastened to the brake pad holder of the brake caliper unit instead of the brake pad, the brake caliper unit being installed in the rail vehicle, wherein the carrier plate 2 comprises at least one force measuring sensor 3 includes, which is introduced into the support plate 2 such that it generates a measurement signal with effective brake, which is a measure of the contact pressure of the support plate 2 on the brake disc, the measurement signal from the force measuring sensor 3 is led out by means of a connecting cable 4 and the braking effect of Brake caliper unit is triggered, wherein the size of the contact pressure on the brake disc by means of an evaluation unit 5, which is supplied by means of the connecting cable 4, the measurement signal is determined.
  • a brake pad in the case of split pads, both semi-pads
  • the evaluation unit 5 is connected to the cable 4 of the force measuring sensors 3.
  • the brake of the rail vehicle is applied and thereby the device 1 or instead of the brake pad inserted into the brake caliper unit support plate 2 is pressed against the brake disc.
  • requirements for occupational safety must be observed.
  • the brake is released again. This sequence is repeated for all brake positions and brake types. In general, it may be advantageous if the triggering of the braking action of the brake caliper unit and the determination of the magnitude of the contact force on the brake disc are repeated for a plurality of brake positions and brake types.
  • the measured values of the contact force can then be compared with nominal values of the contact force.
  • the target values come for example from the brake calculation of the rail vehicle, but can also be based on empirical values.
  • the brake caliper unit can continue to operate until the next measurement, so must not be removed. If they are outside the tolerance range, replace the brake caliper unit and work up.
  • the measurement interval shall also be determined by the maintenance unit of the rolling stock on the basis of a risk analysis.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Description

Die Erfindung betrifft eine Messvorrichtung zum Messen der Anpresskraft der Bremsbeläge von Bremszangeneinheiten an die Bremsscheiben scheibengebremster Schienenfahrzeuge, d.h. eine Vorrichtung, mit der die von einem Bremsbelag einer Bremszangeneinheit eines scheibengebremsten Radsatzes eines Schienenfahrzeuges auf die Bremsscheibe aufgebrachte Anpresskraft gemessen werden kann. Dies betrifft sowohl Bremszangeneinheiten an Scheibenbremsen mit Wellenbremsscheiben als auch an Scheibenbremsen mit Radbremsscheiben. Ferner richtet sich die Erfindung auf ein entsprechendes Verfahren zum Messen der Anpresskraft der Bremsbeläge von Bremszangeneinheiten an die Bremsscheiben scheibengebremster Schienenfahrzeuge.The invention relates to a measuring device for measuring the pressing force of the brake pads of brake caliper units to the brake discs Scheibengebremster rail vehicles, i. a device with which the force applied by a brake pad of a brake caliper unit of a disk-braked wheelset of a rail vehicle on the brake disc contact pressure can be measured. This applies to brake caliper units on disc brakes with shaft brake discs as well as disc brakes with wheel brake discs. Furthermore, the invention is directed to a corresponding method for measuring the contact pressure of the brake pads of brake caliper units to the brake discs Scheibengebremster rail vehicles.

Nach dem Stand der Technik wird die ordnungsgemäße Funktion der Bremszangeneinheit scheibengebremster Schienenfahrzeuge auf zwei Weisen geprüft. Zum einen wird während Instandhaltungs-, Kontroll- oder Wartungsarbeiten der Schienenfahrzeuge die Bremszangeneinheit in einem in das Schienenfahrzeug eingebauten Zustand nur indirekt anhand der Leichtgängigkeit der beweglichen Teile und einer augenscheinlichen Prüfung auf sichtbare Mängel geprüft. Eine messtechnische Kontrolle, ob die in der Bremsberechnung der Fahrzeugzulassungsdokumentation vorgeschriebene Anpresskraft der Bremsbeläge auf den Bremsscheiben beim Auslösen der Bremswirkung tatsächlich erreicht wird, erfolgt während betriebsnaher Instandhaltungs-, Kontroll- oder Wartungsarbeiten der Schienenfahrzeuge im eingebauten Zustand der Bremszangeneinheit nicht. Nach diesem Prinziparbeitetbeispielsweise die aus der Offenlegungsschrift DE 10022759 A1 bekannte Vorrichtung.According to the state of the art, the proper functioning of the brake caliper unit of disk-braked rail vehicles is tested in two ways. Firstly, during maintenance, inspection or maintenance of rail vehicles, the brake caliper unit is tested in a built-in condition of the rail vehicle only indirectly on the basis of the ease of movement of the moving parts and an apparent test for visible defects. A metrological check whether the prescribed in the brake calculation of vehicle registration documentation contact pressure of the brake pads on the brake discs Triggering the braking effect is actually achieved, does not occur during operational maintenance, inspection or maintenance of rail vehicles in the installed state of the brake caliper unit. According to this principle, for example, works from the published patent application DE 10022759 A1 known device.

Zum anderen erfolgt eine messtechnische Kontrolle, ob die in der Bremsberechnung der Fahrzeugzulassungsdokumentation vorgeschriebene Anpresskraft der Bremsbeläge auf den Bremsscheiben beim Auslösen der Bremswirkung tatsächlich erreicht wird, während der Aufarbeitung der Bremszangen im aus dem Schienenfahrzeug ausgebauten Zustand auf einem speziellen Prüfstand beim Aufarbeiter. Dazu wird die Bremszangeneinheit unabhängig von ihrem tatsächlichen Verschleißzustand in einem regelmäßigen Zeitintervall aus dem Schienenfahrzeug ausgebaut und der Aufarbeitung zugeführt.On the other hand, there is a metrological check whether the prescribed in the brake calculation of the vehicle registration documentation contact pressure of the brake pads on the brake discs when triggering the braking effect is actually achieved during the processing of the brake caliper in the dismantled from the rail vehicle state on a special test bench at the processor. For this purpose, the brake caliper unit is removed regardless of their actual state of wear in a regular time interval from the rail vehicle and fed to the workup.

Die Prüfung der Funktion der Bremszangeneinheit scheibengebremster Schienenfahrzeuge nach dem Stand der Technik weist somit die Nachteile auf, dass im eingebauten Zustand der Bremszangeneinheit nur eine Sichtprüfung, aber keine messtechnische Funktionskontrolle erfolgt, und zum Durchführen einer messtechnischen Funktionskontrolle, die insbesondere eine Messung der Anpresskraft der Bremsbeläge von Bremszangeneinheiten an die Bremsscheiben umfasst, die Bremszangeneinheit aus dem Schienenfahrzeug ausgebaut und zur Überprüfung in einen speziellen Prüfstand eingebaut werden muss.The examination of the function of the brake caliper unit Scheibengebremster rail vehicles according to the prior art thus has the disadvantages that in the installed state of the brake caliper unit only a visual inspection, but no metrological functional check, and for performing a metrological function control, in particular a measurement of the contact pressure of the brake pads includes brake caliper units to the brake discs, the brake caliper unit must be removed from the rail vehicle and installed in a special test bench for review.

Ausgehend von diesem Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Vorrichtung und ein entsprechendes Verfahren zu schaffen, mit der das Messen der Anpresskraft der Bremsbeläge auf den Bremsscheiben von Schienenfahrzeugen im eingebauten Zustand der Bremszangeneinheit mit wirksamer Bremse während betriebsnaher Instandhaltungs-, Kontroll- oder Wartungsarbeiten an den Schienenfahrzeugen ermöglicht wird, d.h. ohne dass die Bremszangeneinheit zum Prüfen der Anpresskraft aus dem Schienenfahrzeug ausgebaut werden muss.Based on this prior art, the present invention seeks to provide an apparatus and a corresponding method, with the measuring of the contact pressure of the brake pads on the brake discs of rail vehicles in the installed state of the brake caliper unit with effective brake during operational maintenance, control - or maintenance work on the rail vehicles is possible, ie without the brake caliper unit must be removed to check the contact pressure of the rail vehicle.

Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung mit den Merkmalen des beigefügten Anspruchs 1 gelöst. Bevorzugte Ausgestaltungen, Weiterbildungen und Verwendungen der Erfindung ergeben sich aus den nebengeordneten und abhängigen Ansprüchen und der nachfolgenden Beschreibung mit zugehörigen Zeichnungen.This object is achieved by a device with the features of the attached claim 1. Preferred embodiments, developments and uses of the invention will become apparent from the independent and dependent claims and the following description with accompanying drawings.

Eine erfindungsgemäße Vorrichtung zum Messen der von einem Bremsbelag einer Bremszangeneinheit eines scheibengebremsten Schienenfahrzeuges auf die Bremsscheibe aufgebrachten Anpresskraft umfasst also eine Trägerplatte, die anstelle des Bremsbelags am Bremsbelaghalter der Bremszangeneinheit befestigt werden kann, wobei die Bremszangeneinheit in das Schienenfahrzeug eingebaut ist, mindestens einen Kraftmesssensor, der derart in die Trägerplatte eingebracht ist, dass er bei wirksamer Bremse ein Messsignal erzeugt, das ein Maß für die Anpresskraft der Trägerplatte an der Bremsscheibe ist, ein Anschlusskabel zum Herausführen des Messsignals von dem Kraftmesssensor und eine Auswerteeinheit, der mittels des Anschlusskabels das Messsignal zugeführt wird und die zum Ermitteln der Größe der Anpresskraft an der Bremsscheibe aus dem Messsignal ausgebildet ist.A device according to the invention for measuring the force applied to the brake disk by a brake lining of a brake caliper unit of a disk-braked rail vehicle thus comprises a carrier plate which can be fastened instead of the brake pad on the brake pad holder of the brake caliper unit, wherein the brake caliper unit is installed in the rail vehicle, at least one force measuring sensor is introduced into the support plate so that it generates a measurement signal with effective brake, which is a measure of the contact pressure of the support plate on the brake disc, a connection cable for taking out the measurement signal from the force measuring sensor and an evaluation unit, which is supplied by the connecting cable, the measurement signal and which is designed to determine the size of the contact pressure on the brake disc from the measurement signal.

Ein entsprechendes erfindungsgemäßes Verfahren zum Messen der von einem Bremsbelag einer Bremszangeneinheit eines scheibengebremsten Schienenfahrzeuges auf die Bremsscheibe aufgebrachten Anpresskraft umfasst das Befestigen einer Trägerplatte anstelle des Bremsbelags am Bremsbelaghalter der Bremszangeneinheit, wobei die Bremszangeneinheit in das Schienenfahrzeug eingebaut ist, wobei die Trägerplatte mindestens einen Kraftmesssensor umfasst, der derart in die Trägerplatte eingebracht ist, dass er bei wirksamer Bremse ein Messsignal erzeugt, das ein Maß für die Anpresskraft der Trägerplatte an der Bremsscheibe ist, Herausführen des Messsignals von dem Kraftmesssensor mittels eines Anschlusskabels und Auslösen der Bremswirkung der Bremszangeneinheit und Ermitteln der Größe der Anpresskraft an der Bremsscheibe mittels einer Auswerteeinheit, der mittels des Anschlusskabels das Messsignal zugeführt wird.A corresponding method according to the invention for measuring the contact force applied to the brake disk by a brake pad of a brake caliper unit of a disk-braked rail vehicle comprises attaching a carrier plate instead of the brake pad to the brake pad holder of the brake caliper unit, wherein the brake caliper unit is installed in the rail vehicle, wherein the carrier plate comprises at least one force measuring sensor, which is introduced into the carrier plate in such a way that, when the brake is effective, it generates a measuring signal which is a measure of the contact force of the carrier plate on the brake disc the measuring signal from the force measuring sensor by means of a connecting cable and triggering the braking action of the brake caliper unit and determining the size of the contact pressure on the brake disc by means of an evaluation unit, which is supplied by the connecting cable, the measurement signal.

Die Erfindung hat den Vorteil, dass sie das Messen der Anpresskraft der Bremsbeläge auf den Bremsscheiben von Schienenfahrzeugen im eingebauten Zustand der Bremszangeneinheit während betriebsnaher Instandhaltungs-, Kontroll- oder Wartungsarbeiten an den Schienenfahrzeugen ermöglicht und somit der Ausbau und die Aufarbeitung der Bremszangeneinheit näher an die tatsächliche Verschleißgrenze gelegt werden kann.The invention has the advantage that it allows the measurement of the contact pressure of the brake pads on the brake discs of rail vehicles in the installed state of the brake caliper unit during operational maintenance, inspection or maintenance of the rail vehicles and thus the expansion and processing of the brake caliper unit closer to the actual Wear limit can be set.

Das geltende Regelwerk der Schienenfahrzeuginstandhaltung und der bekannte Stand der Technik sehen eine Messung der Anpresskraft der Bremsbeläge auf den Bremsscheiben bei Instandhaltungs-, Kontroll- oder Wartungsarbeiten der Schienenfahrzeuge im eingebauten Zustand der Bremszangeneinheit nicht vor. Das geltende Regelwerk legt also nicht nahe, nach einer Lösung, wie sie die Erfindung beinhaltet, zu suchen. Insofern ist es nicht naheliegend, ausgehend von dem Stand der Technik der Schienenfahrzeuginstandhaltung zu der Erfindung zu gelangen.The current regulations of rail vehicle maintenance and the known prior art do not provide a measurement of the contact pressure of the brake pads on the brake discs during maintenance, inspection or maintenance of rail vehicles in the installed state of the brake caliper unit. The current set of rules does not suggest to look for a solution as it contains the invention. In this respect, it is not obvious to proceed from the prior art of rail vehicle maintenance to the invention.

Der Erfindung liegt die Erkenntnis zugrunde, dass der Ausbau und die Aufarbeitung der Bremszangeneinheiten nicht in einem festen, vorsorglichen Intervall stattfinden müssen, sondern nach dem tatsächlichen Erreichen von definierten Verschleißgrenzen vorgenommen werden können. Als wesentliches Kontrollkriterium ist dabei zu prüfen, ob die in der Bremsberechnung der Fahrzeugzulassungsdokumentation vorgeschriebenen Anpresskraft der Bremsbeläge auf den Bremsscheiben zuverlässig erreicht wird. Da alle Verschleiß-, Alterungs- und Ausfallerscheinungen der einzelnen Bauteile der Bremszangeneinheit letztlich ein Absinken oder vollständiges Ausbleiben der Anpresskraft der Bremsbeläge auf den Bremsscheiben und damit eine Reduktion oder einen Ausfall der Bremswirkung zur Folge haben, ist über die direkte Messung der Anpresskraft ein Rückschluss darauf möglich, dass zum Zeitpunkt der Messung keine unzulässigen Verschleiß-, Alterungs- oder Ausfallzustände herrschen.The invention is based on the finding that the removal and processing of the brake caliper units need not take place in a fixed, precautionary interval, but can be carried out after the actual achievement of defined wear limits. As an essential control criterion is to check whether the prescribed in the brake calculation of the vehicle registration documentation contact pressure of the brake pads on the brake discs is reliably achieved. Since all wear, aging and failure phenomena of the individual components of the brake caliper unit ultimately a drop or complete absence of the contact pressure of the brake pads on the brake discs and thus a reduction or failure of the braking effect As a result of the direct measurement of the contact force, it is possible to infer that no inadmissible wear, aging or failure conditions prevail at the time of the measurement.

Mit der Erfindung kann die Wirksamkeit der Bremszangeneinheit ohne Ausbau derselben während einer Instandhaltungs-, Kontroll- oder Wartungsmaßnahme unmittelbar durch Messung ihrer Bremskraft an der Bremsscheibe überprüft werden und alle Verschleiß-, Alterungs- und Ausfallerscheinungen, die zu einer Verminderung der Bremskraft an der Bremsscheibe führen, können dadurch erkannt werden. Eine regelmäßige Messung im Rahmen der Instandhaltung, Kontrolle oder Wartung bringt Erkenntnisse über die Verschleiß-, Alterungs- und Ausfallverläufe der Bremszangeneinheiten. Dadurch wird die Erfindung vorteilhafterweise eine deutliche Intervallverlängerung der Aufarbeitung der Bremszangeneinheiten ermöglichen, die ohne einen Verlust an Sicherheit erhebliche Kosten einspart.With the invention, the effectiveness of the brake caliper unit without removing the same during a maintenance, inspection or maintenance measure can be checked directly by measuring their braking force on the brake disc and all wear, aging and failure phenomena that lead to a reduction of the braking force to the brake disc , can be recognized by it. A regular measurement in the course of maintenance, inspection or maintenance provides information on the wear, aging and failure characteristics of the brake caliper units. Thereby, the invention will advantageously allow a significant interval extension of the workup of the brake caliper units, which saves considerable costs without a loss of security.

Eine Trägerplatte kann ein oder mehrere Kraftmesssensoren aufweisen, mit denen die Anpresskraft der Bremszangeneinheit auf die Bremsscheibe bei wirksamer Bremse gemessen werden kann. Die Kraftmesssensoren sind vorzugsweise in die Trägerplatte eingelassen, können aber auch auf andere Weise an der Trägerplatte befestigt sein. Die Kraftsensoren sind vorteilhafterweise bezüglich ihres Messbereichs für die Messung der gemäß Bremsberechnung des jeweiligen Schienenfahrzeugs zu erwartenden Kräfte ausgelegt. Kraftmesssensoren im Sinne der Erfindung sind auch Druckmesssensoren, da bei bekannter Größe der Aufstands- oder Druckfläche eines Druckmesssensors der gemessene Anpressdruck ebenfalls ein Maß für die Anpresskraft ist.A carrier plate may have one or more force measuring sensors, with which the contact pressure of the brake caliper unit can be measured on the brake disc with effective brake. The force measuring sensors are preferably embedded in the support plate, but may also be attached to the support plate in other ways. The force sensors are advantageously designed with respect to their measuring range for the measurement of the expected according to the brake calculation of the respective rail vehicle forces. Force measuring sensors in the sense of the invention are also pressure measuring sensors, since with a known size of the contact or pressure surface of a pressure measuring sensor, the measured contact pressure is also a measure of the contact pressure.

Die Erfindung wird nachfolgend anhand eines in den Figuren dargestellten Ausführungsbeispiels näher erläutert. Die darin beschriebenen Besonderheiten können einzeln oder in Kombination miteinander eingesetzt werden, um bevorzugte Ausgestaltungen der Erfindung zu schaffen. Gleiche oder gleich wirkende Teile werden in den verschiedenen Figuren mit denselben Bezugszeichen bezeichnet und gewöhnlich nur einmal beschrieben, auch wenn sie bei anderen Ausführungsformen vorteilhaft eingesetzt werden können. Es zeigt:

Figur 1
eine schematische Ansicht einer erfindungsgemäßen Vorrichtung.
The invention will be explained in more detail with reference to an embodiment shown in FIGS. The peculiarities described therein can be used individually or in combination with each other, to provide preferred embodiments of the invention. Identical or equivalent parts are denoted by the same reference numerals in the various figures and usually described only once, although they can be used advantageously in other embodiments. It shows:
FIG. 1
a schematic view of a device according to the invention.

Die Figur 1 zeigt eine schematische Ansicht einer erfindungsgemäßen Vorrichtung 1 zum Messen der von einem Bremsbelag einer Bremszangeneinheit eines scheibengebremsten Schienenfahrzeuges auf die Bremsscheibe aufgebrachten Anpresskraft in Aufsicht auf die Seite der Trägerplatte 2, die an einer nicht dargestellten Bremsscheibe anliegt. Die Vorrichtung 1 umfasst eine Trägerplatte 2, beispielsweise aus Stahl, die anstelle des Bremsbelags am Bremsbelaghalter der Bremszangeneinheit befestigt werden kann, wobei die Bremszangeneinheit in das Schienenfahrzeug eingebaut ist.The FIG. 1 shows a schematic view of a device 1 according to the invention for measuring the force applied by a brake pad of a brake caliper unit of a disk-braked rail vehicle on the brake disc contact pressure in plan view of the side of the support plate 2, which bears against a brake disc, not shown. The device 1 comprises a support plate 2, for example made of steel, which can be fixed instead of the brake pad on the brake pad holder of the brake caliper unit, wherein the brake caliper unit is installed in the rail vehicle.

Die Vorrichtung 1 umfasst ferner mindestens einen Kraftmesssensor 3, der derart in die Trägerplatte 2 eingebracht ist, dass er bei wirksamer Bremse ein Messsignal erzeugt, das ein Maß für die Anpresskraft der Trägerplatte 2 an der Bremsscheibe ist, ein Anschlusskabel 4 zum Herausführen des Messsignals von dem Kraftmesssensor 3 und eine Auswerteeinheit 5, der mittels des Anschlusskabels 4 das Messsignal zugeführt wird und die zum Ermitteln der Größe der Anpresskraft an der Bremsscheibe ausgebildet ist.The device 1 further comprises at least one force measuring sensor 3, which is introduced into the carrier plate 2 so that it generates a measurement signal with effective brake, which is a measure of the contact pressure of the carrier plate 2 on the brake disc, a connection cable 4 for taking out the measurement signal of the force measuring sensor 3 and an evaluation unit 5, which is supplied by means of the connecting cable 4, the measuring signal and which is designed to determine the size of the contact pressure on the brake disc.

Die Trägerplatte 2 besteht beispielsweise aus Stahl. Nach einem bevorzugten Merkmal entspricht die Trägerplatte 2 in ihrer Form und Kontur und in der Ausbildung der Befestigungselemente, mit denen sie an dem Bremsbelaghalter der zugehörigen, zu prüfenden Bremszangeneinheit befestigt werden kann, dem Bremsbelag, anstelle dessen sie am Bremsbelaghalter befestigt werden kann. Vorzugsweise sind Form und Kontur der Trägerplatte 2 und die Ausbildung der Befestigungselemente identisch zu dem dem Bremsbelag, anstelle dessen sie am Bremsbelaghalter befestigt werden kann. Damit die Trägerplatte 2 eine Außenkontur und die Befestigungspunkte der für die jeweilige Bauart der Bremszangeneinheit passenden Bremsbeläge aufweist, ist es vorteilhaft, wenn die erfindungsgemäße Vorrichtung 1 ein System oder eine Reihe von Trägerplatten 2 umfasst, in dem es für jede Bremsbauart eine an die Form der zugehörigen Bremsbeläge angepasste Trägerplatte 2 gibt, die in ihrer Kontur und Befestigungsmöglichkeit am Bremsbelaghalter zu dem jeweils nach Bremsentyp zu verwendenden Bremsbelag ähnlich oder identisch ist und deshalb anstelle des Bremsbelags am Bremsbelaghalter befestigt werden kann.The support plate 2 consists for example of steel. According to a preferred feature, the support plate 2 corresponds in shape and contour and in the design of the fasteners with which they on the brake pad holder of the associated, to be tested brake caliper unit can be attached to the brake pad, instead of it can be attached to the brake pad holder. Preferably, the shape and contour of the support plate 2 and the formation of the fastening elements are identical to the brake pad, instead of which they can be attached to the brake pad holder. Thus, the support plate 2 has an outer contour and the attachment points of the appropriate type of brake caliper unit brake pads, it is advantageous if the device 1 according to the invention comprises a system or a series of support plates 2, in which there is one for each Bremsbauart to the shape of the Matching brake pads adapted support plate 2 are, which is similar or identical in its contour and mounting option on the brake pad holder to the respective brake type to be used brake pad and therefore instead of the brake pad on the brake pad holder can be attached.

In der Regel ähnelt die Kontur eines Bremsbelags einer flachen Scheibe gleichmäßiger Dicke, die die Form einer entlang des großen Durchmessers gebogenen, flachen Ellipse hat. Die in Figur 1 dargestellte Trägerplatte 2 hat ebenfalls diese Form, ist aber am kleinen Durchmesser der gebogenen Ellipse in zwei etwa gleichgroße Teile 2a, 2b zweigeteilt. Dies entspricht der Bauart mancher zweigeteilter Bremsbeläge. Im Bremsbelaghalter werden zwei dieser Beläge mit den geraden Enden zueinander befestigt, sodass aus diesen zwei Einzelbelägen ein Gesamtbelag in Form einer flachen, entlang des großen Durchmessers gebogenen Ellipse entsteht. Entsprechendes gilt für die Teile 2a, 2b der Trägerplatte 2. Alternativ kann die Kontur der Bremsbeläge auch nur aus einem Belagteil in der Form des beschriebenen Gesamtbelags bestehen, also auch die Trägerplatte 2. Allgemein kann die Trägerplatte 2 mehrteilig ausgebildet sein, wobei einer oder mehrere Teile der Trägerplatte 2 keinen, einen oder mehrere Kraftmesssensoren 3 aufweisen können.Typically, the contour of a brake pad is similar to a flat disc of uniform thickness, which has the shape of a flat ellipse curved along the large diameter. In the FIG. 1 Support plate 2 shown also has this shape, but at the small diameter of the curved ellipse in two approximately equal parts 2a, 2b in two parts. This corresponds to the design of some two-part brake pads. In the brake pad holder, two of these pads with the straight ends are attached to each other, so that these two single pads a total covering in the form of a flat, curved along the large diameter ellipse. The same applies to the parts 2a, 2b of the support plate 2. Alternatively, the contour of the brake pads consist only of a covering part in the form of the described total covering, including the support plate 2. In general, the support plate 2 may be formed in several parts, wherein one or more Parts of the support plate 2 can not have one or more force measuring sensors 3.

Für unterschiedliche Bauarten von Schienenfahrzeugen und Bremszangeneinheiten sind also unterschiedliche Trägerplatten 2 zu verwenden, die in ihrer Form und den Befestigungsmöglichkeiten am Bremsbelaghalter den jeweils passenden Belägen entsprechen. Allen Trägerplatten 2 ist in der Regel gemeinsam, dass der Raum, der erforderlich ist, um einen oder mehrere für die Größe der Anpresskraft geeignete Kraftmesssensoren 3 aufzunehmen, aus dem Material der Trägerplatte 2 ausgearbeitet, zum Beispiel ausgefräst ist. Alternativ können die Messschichten der Kraftmesssensoren auch flächig auf der Trägerplatte 2 ausgebildet sein. In diesem Raum sitzen die Kraftmesssensoren 3, die mit der Trägerplatte 2 form-, stoff- oder kraftschlüssig verbunden sind. Bei dem Ausführungsbeispiel in Figur 2 sind zwei Kraftmesssensoren 3a, 3b vorgesehen, und zwar jeweils einer in einem Teil 2a, 2b der Trägerplatte 2.For different types of rail vehicles and brake caliper units so different support plates 2 are to be used, which correspond in their shape and the mounting options on the brake pad holder the appropriate coverings. Allen support plates 2 is common in common that the space required to accommodate one or more suitable for the size of the contact force force measuring sensors 3, worked out of the material of the support plate 2, for example, is milled. Alternatively, the measuring layers of the force measuring sensors can also be formed flat on the carrier plate 2. In this room sit the force measuring sensors 3, which are positively, materially or non-positively connected to the support plate 2. In the exemplary embodiment in FIG. 2, two force measuring sensors 3 a, 3 b are provided, one in each case in a part 2 a, 2 b of the carrier plate 2.

Aus den Kraftmesssensoren 3 ist ein Anschlusskabel 4 herausgeführt, das das Messsignal zur Auswerteeinheit 5 leitet. Der Raum für die Sensoren in der Trägerplatte 2, die Kraftmesssensoren 3 und das Kabel 4 sind vorzugsweise so in der Trägerplatte 2 angeordnet, dass die Funktion der Bremszangeneinheit dabei nicht beeinträchtigt wird. Allgemein ist es vorteilhaft, wenn die Aussparungen in der Trägerplatte 2 für die Kraftmesssensoren 3, die Kraftmesssensoren 3, das Anschlusskabel 4 und die Auswerteeinheit 5 derart in einem freien Bauraum, einschließlich des Raumes des durch sie ersetzten Bremsbelags, angeordnet sind, dass die Funktion der Bremszangeneinheit nicht behindert wird.From the force measuring sensors 3, a connection cable 4 is led out, which passes the measurement signal to the evaluation unit 5. The space for the sensors in the support plate 2, the force measuring sensors 3 and the cable 4 are preferably arranged in the support plate 2, that the function of the brake caliper unit is not affected. In general, it is advantageous if the recesses in the support plate 2 for the force measuring sensors 3, the force measuring sensors 3, the connecting cable 4 and the evaluation unit 5 are arranged in a free space, including the space of the replaced by them brake pad, that the function of Brake caliper unit is not obstructed.

Die Vorrichtung 1 umfasst also eine Trägerplatte 2, die in Kontur und Befestigungsmöglichkeit mit dem Bremsbelag identisch oder zu diesem ähnlich ist und die deshalb anstelle eines Bremsbelages am Bremsbelaghalter befestigt werden kann. Da Bremsbeläge im Rahmen der Instandhaltungs-, Kontroll- oder Wartungsarbeiten der Schienenfahrzeuge nach Verschleiß regelmäßig im eingebauten Zustand der Bremszangeneinheit gegen neue Beläge getauscht werden, ist der Tausch eines Bremsbelags gegen die Trägerplatte 2 der Vorrichtung 1 im eingebauten Zustand der Bremszangeneinheit leicht möglich. Die Trägerplatte 2 enthält eine oder mehrere Aussparungen, in denen ein oder mehrere handelsübliche Kraftmesssensoren 3 untergebracht sind, die für die Aufnahme der zu messenden Anpresskräfte geeignet sind. Über das an den Kraftmesssensoren 3 angebrachte und nach außen geführte Kabel 4 wird der Messwert der Anpresskraft einer ebenfalls handelsüblichen Auswerteeinheit 5, die nach einem weiteren vorteilhaften Merkmal als Ablese-, Auswerte- und Speichereinheit ausgebildet ist, zugeführt. Der Kern der Erfindung besteht in der Gestaltung der Trägerplatte 2 als Bremsbelag-Dummy mit eingebauter und angeschlossener Kraftmesstechnik. Die Kraftmesssensoren 3 und die Ablese-, Auswerte- und Speichereinheit 6 selbst sind nicht Gegenstand der Erfindung, sondern handelsübliche gebräuchliche Teile, die hier nur in einem neuen Kontext verwendet werden.The device 1 thus comprises a support plate 2, which is identical in contour and mounting possibility with the brake pad or similar to this and which can therefore be fixed instead of a brake pad on the brake pad holder. Since brake pads are regularly replaced after wear in the course of the maintenance, inspection or maintenance of rail vehicles after wear in the installed state of the brake caliper unit, is the replacement of a brake pad against the support plate 2 of the device 1 in the installed state of the brake caliper unit easily possible. The support plate 2 includes one or more recesses in which one or more commercially available force measuring sensors 3 are accommodated, which are suitable for receiving the contact forces to be measured. Via the attached to the force measuring sensors 3 and outwardly guided cable 4, the measured value of the contact force of a likewise commercially available evaluation unit 5, which is designed according to a further advantageous feature as a reading, evaluation and storage unit supplied. The essence of the invention consists in the design of the support plate 2 as a brake pad dummy with built-in and connected force measurement. The force measuring sensors 3 and the read-out, evaluation and storage unit 6 itself are not the subject of the invention, but commercial common parts, which are used here only in a new context.

Bei einem erfindungsgemäßen Verfahren zum Messen der von einem Bremsbelag einer Bremszangeneinheit eines scheibengebremsten Schienenfahrzeuges auf die Bremsscheibe aufgebrachten Anpresskraft wird eine Trägerplatte 2 anstelle des Bremsbelags am Bremsbelaghalter der Bremszangeneinheit befestigt, wobei die Bremszangeneinheit in das Schienenfahrzeug eingebaut ist, wobei die Trägerplatte 2 mindestens einen Kraftmesssensor 3 umfasst, der derart in die Trägerplatte 2 eingebracht ist, dass er bei wirksamer Bremse ein Messsignal erzeugt, das ein Maß für die Anpresskraft der Trägerplatte 2 an der Bremsscheibe ist, das Messsignal von dem Kraftmesssensor 3 wird mittels eines Anschlusskabels 4 herausgeführt und die Bremswirkung der Bremszangeneinheit wird ausgelöst, wobei die Größe der Anpresskraft an der Bremsscheibe mittels einer Auswerteeinheit 5, der mittels des Anschlusskabels 4 das Messsignal zugeführt wird, ermittelt wird.In a method according to the invention for measuring the contact force exerted by a brake pad of a brake caliper unit of a disk-braked rail vehicle on the brake disk, a carrier plate 2 is fastened to the brake pad holder of the brake caliper unit instead of the brake pad, the brake caliper unit being installed in the rail vehicle, wherein the carrier plate 2 comprises at least one force measuring sensor 3 includes, which is introduced into the support plate 2 such that it generates a measurement signal with effective brake, which is a measure of the contact pressure of the support plate 2 on the brake disc, the measurement signal from the force measuring sensor 3 is led out by means of a connecting cable 4 and the braking effect of Brake caliper unit is triggered, wherein the size of the contact pressure on the brake disc by means of an evaluation unit 5, which is supplied by means of the connecting cable 4, the measurement signal is determined.

Vor Beginn der Messung wird also ein Bremsbelag (bei geteilten Belägen beide Halbbeläge) bei in das Schienenfahrzeug eingebautem Zustand der Bremszangeneinheit aus dem Bremsbelaghalter entfernt und dafür die Trägerplatte 2 mit den Kraftmesssensoren 3 und dem Anschlusskabel 4 am Bremsbelaghalter der Bremszangeneinheit angebracht. An das Kabel 4 der Kraftmesssensoren 3 wird die Auswerteeinheit 5 angeschlossen. Wenn die Vorrichtung 1 bereit zum Messen ist, wird die Bremse des Schienenfahrzeugs angelegt und dadurch die Vorrichtung 1 bzw. die anstelle des Bremsbelags in die Bremszangeneinheit eingesetzte Trägerplatte 2 an die Bremsscheibe angepresst. Hierbei sind natürlich Anforderungen zur Arbeitssicherheit (Quetschgefahr beim Wirksamwerden der Bremse, d.h. beim Auslösen der Bremse und bei arbeitender Bremszangeneinheit) zu beachten.Before the start of the measurement, therefore, a brake pad (in the case of split pads, both semi-pads) will be in the state where the vehicle is installed Brake caliper unit removed from the pad retainer and for the support plate 2 with the force measuring sensors 3 and the connecting cable 4 attached to the brake pad holder of the brake caliper unit. To the cable 4 of the force measuring sensors 3, the evaluation unit 5 is connected. When the device 1 is ready to be measured, the brake of the rail vehicle is applied and thereby the device 1 or instead of the brake pad inserted into the brake caliper unit support plate 2 is pressed against the brake disc. In this case, of course, requirements for occupational safety (danger of crushing when the brake becomes effective, ie when the brake is released and when the brake caliper unit is working) must be observed.

Nachdem der Ist-Messwert der Anpresskraft in der Auswerteeinheit 5 bzw. Ablese-, Auswerte- und Speichereinheit 6 registriert ist, wird die Bremse wieder gelöst. Diese Abfolge wird für alle Bremsstellungen und Bremsarten wiederholt. Allgemein kann es vorteilhaft sein, wenn für mehrere Bremsstellungen und Bremsarten das Auslösen der Bremswirkung der Bremszangeneinheit und das Ermitteln der Größe der Anpresskraft an der Bremsscheibe wiederholt werden. In einem Auswerteschritt können dann die Messwerte der Anpresskraft mit Soll-Werten der Anpresskraft verglichen werden. Die Soll-Werte stammen beispielsweise aus der Bremsberechnung des Schienenfahrzeugs, können aber auch auf Erfahrungswerten beruhen. Liegen die Ist-Werte innerhalb eines von der für die Instandhaltung verantwortlichen Stelle des Schienenfahrzeugs zu definierenden Toleranzbereichs um den Soll-Wert, kann die Bremszangeneinheit bis zur nächsten Messung weiter betrieben werden, muss also nicht ausgebaut werden. Liegen sie außerhalb des Toleranzbereichs, ist die Bremszangeneinheit zu tauschen und aufzuarbeiten. Das Messintervall ist ebenfalls durch die für die Instandhaltung verantwortliche Stelle des Schienenfahrzeugs auf der Grundlage einer Risikoanalyse festzulegen.After the actual measured value of the contact force is registered in the evaluation unit 5 or read-out, evaluation and storage unit 6, the brake is released again. This sequence is repeated for all brake positions and brake types. In general, it may be advantageous if the triggering of the braking action of the brake caliper unit and the determination of the magnitude of the contact force on the brake disc are repeated for a plurality of brake positions and brake types. In an evaluation step, the measured values of the contact force can then be compared with nominal values of the contact force. The target values come for example from the brake calculation of the rail vehicle, but can also be based on empirical values. If the actual values within a tolerance range to be defined by the responsible for the maintenance of the rail vehicle to be defined tolerance range by the target value, the brake caliper unit can continue to operate until the next measurement, so must not be removed. If they are outside the tolerance range, replace the brake caliper unit and work up. The measurement interval shall also be determined by the maintenance unit of the rolling stock on the basis of a risk analysis.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorrichtungcontraption
22
Trägerplattesupport plate
2a2a
Teil einer TrägerplattePart of a carrier plate
2b2 B
Teil einer TrägerplattePart of a carrier plate
33
KraftmesssensorLoad Sensor
3a3a
erster Kraftmesssensorfirst force measuring sensor
3b3b
zweiter Kraftmesssensorsecond force measuring sensor
44
Anschlusskabelconnection cable
55
Auswerteeinheitevaluation
66
Ablese-, Auswerte- und SpeichereinheitReading, evaluation and storage unit

Claims (11)

  1. Device (1) for measuring the pressing force of a brake lining of a brake calliper unit of a disc-braked rail vehicle applied on the brake disc, characterized in that it comprises:
    - a carrier plate (2) that can be fixed to the brake lining holder of the brake calliper unit in place of the brake lining, wherein the brake calliper unit is installed into the rail vehicle,
    - at least one force measuring sensor (3) which is fitted into the carrier plate (2) such that it generates a measuring signal when the brake is applied, which signal is a measure for the pressing force of the carrier plate (2) on the brake disc,
    - a connector cable (4) for leading the measuring signal out of the force measuring sensor (3) and
    - an evaluation unit (5) which is fed with the measuring signal via the connector cable (4) and which is configured for determining the size of the pressing force on the brake disc from the measuring signal.
  2. Device (1) according to claim 1, characterized in that the carrier plate (2) in its shape and contour and with respect to the configuration of its fixing elements, by means of which said plate can be fixed to the brake lining holder of the associated brake calliper unit to be measured, corresponds to the brake lining in place of which said plate can be fixed to the brake lining holder.
  3. Device (1) according to one of the preceding claims, characterized in that the carrier plate (2) is a multipart plate.
  4. Device (1) according to the preceding claim, characterized in that the carrier plate (2) is divided into two parts (2a, 2b) approximately equal in size.
  5. Device (1) according to one of the preceding claims, characterized in that the contour of the carrier plate (2) is similar to a contour of a brake lining having the contour of a flat disc with even thickness bend along the large diameter of a flat ellipse.
  6. Device (1) according to one of the preceding claims, characterized in that the carrier plate (2) comprises multiple force measuring sensors (3a, 3b) by means of which can be measured the pressing force of the brake calliper unit on the brake disc when the brake is applied.
  7. Device (1) according to one of the preceding claims, characterized in that the evaluation unit (5) is configured as a read-out, evaluation and storage unit (6).
  8. Device (1) according to one of the preceding claims, characterized in that the recesses in the carrier plate (2) for the force measuring sensors (3), the force measuring sensors (3), the connector cable (4) and the evaluation unit (5) are arranged in a free installation space, including the space of the brake lining replaced by them, such that the function of the brake calliper unit is not obstructed.
  9. Method for measuring the pressing force of a brake lining of a brake calliper unit of a disk-braked rail vehicle applied on the brake disc, comprising
    - fixing a carrier plate (2) to the brake lining holder of the brake calliper unit in place of the brake lining, wherein the brake calliper unit is installed in the railroad vehicle,
    wherein the carrier plate (2) comprises at least one force measuring sensor (3) which is fitted into the carrier plate (2) such that it generates a measuring signal when the brake is applied, which signal is a measure for the pressing force of the carrier plate (2) on the brake disc,
    - leading the measuring signal out from the force measuring sensor (3) via a connector cable (4) and
    - initiating the braking effect of the brake calliper unit and determining the size of the pressing force on the brake disc by means of an evaluation unit (5) which is fed with the measuring signal via the connector cable (4).
  10. Method according to claim 9, characterized in that initiating the braking effect of the brake calliper unit and determining the size of the pressing force on the brake disc is repeated for multiple braking positions and braking types.
  11. Method according to claim 9 or 10, characterized in that in an evaluation step, the measured value of the pressing force is compared to a set value of the pressing force.
EP12005981.1A 2012-08-21 2012-08-21 Device and method for measuring the pressing power of the brake linings on brake discs of rail vehicles Active EP2700557B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12005981.1A EP2700557B1 (en) 2012-08-21 2012-08-21 Device and method for measuring the pressing power of the brake linings on brake discs of rail vehicles
PCT/EP2013/002308 WO2014029466A2 (en) 2012-08-21 2013-08-02 Device and method for measuring the pressing force of the brake linings on brake disks of rail vehicles
CN201380036863.8A CN104487313B (en) 2012-08-21 2013-08-02 Device and method for measuring the pressing force of the brake linings on brake disks of rail vehicles
HK15107007.9A HK1206311A1 (en) 2012-08-21 2015-07-22 Device and method for measuring the pressing force of the brake linings on brake disks of rail vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12005981.1A EP2700557B1 (en) 2012-08-21 2012-08-21 Device and method for measuring the pressing power of the brake linings on brake discs of rail vehicles

Publications (2)

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CN106091887B (en) * 2016-05-31 2018-11-06 宝鸡石油机械有限责任公司 A kind of disc brake brake pad device for dynamically detecting
DE102018107521A1 (en) 2018-03-28 2019-10-02 Sebastian Sauer Contact pressure measuring and testing device for detecting the contact force generated by a friction body of a friction brake unit on a stationary vehicle wheel of a vehicle
CN110103933B (en) * 2019-05-29 2020-09-04 中车青岛四方车辆研究所有限公司 Device and method for detecting brake pad and brake clamp unit fault
CN112628312B (en) * 2020-12-17 2023-04-07 山西江淮重工有限责任公司 Floating type yaw brake

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HK1206311A1 (en) 2016-01-08
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WO2014029466A3 (en) 2014-08-14
EP2700557A1 (en) 2014-02-26

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